convexing a hollow grind

RescueRiley

RescueRiley

Joined
Mar 22, 2006
Messages
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was toying around with convexing the non serrated portion of my seal pup, for ease of maintenace in the field, any thoughts on whether or nothis is a good idea, I was thinking of accompishing this through repeated stropping on a snadpaper covered mouse pad...any thoughts. If I attempt this it will be my first attempt at changing the grind on anything. Thanks
 
I'm interested in this thread, RR, because I just got a new knife that I believe is a convex grind, and I don't have a clue how to maintain that edge type. It's in desperate need of sharpening.

I'll have to go ahead and give the mouspad/sandpaper trick a try this weekend.
 
The way that works best for me is to sharpen it regularly. First at a very shallow angle (very thin edge), then bump it up a little and get a good edge so you have a microbevel kinda deal. Then I do it again so its like a 3-faced bevel. Then I'll strop on the final hone; this tends to knock down the shoulder(s) and generally blend everything together. Finally, I strop on leather loaded with Mothers metal polish. This method has worked very well for me, and is extremely easy as you don't have to worry nearly as much about your angle.

I've convexed my Ka-Bar, S30V Native (well, slightly kinda) and some old slippies like this. Especially with those old tool steel blades, this way is great because a short amount of time on the strop will bring back that hair splitting edge when needed.
 
Ive heard that using different grade of sand paper while stropping over a yielding surface such as a mouspad will sharpen a convex edge, also apparently stropping is all that is usually needed to keep aconvex edge sharp. Gibsonfan is able to give pretty detiled info on this it might be worth shooting him an email.
 
Another great to get a convex final edge on a knife with any sort of primary bevel is to use a 1x30 or 1x43 belt sander. Start with about 320 grit and work your way finer. Finish off with a leather belt with rouge on it and you'll have a hair shaving edge.

I recently started using convex edges and have to admit that I love them. I think they are a bit of a lost art.

Charles
 
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